I had a system crash in Jan. After the crash recovery (Windows had written over parts of the disc but recovered most things; however, they were set to states as if they had just been installed), Thunderbird did something I was unhappy with & I reinstalled it. When I did, it did not allow me to select IPOP or IMAP but came up with IMAP, which I had never used before & knew nothing about. However, now having read about IMAP & having used it with Comcast, I dislike it intensely--it's slow & cumbersome & doesn't allow me to save emails with everything permanently attached to them. I haven't had the time to pursue it until now. How can I get back to using IPOP?